* proc/native: make sure debugged executable can be deleted on windows
Delve opens debugged executable to read binary info it
contains, but it never closes the file. Windows will not
let you delete file that is opened. So close Process.bi
in Process.postExit, and actually call Process.postExit
from windows Process.Kill.
Also Windows sends some debugging events
(EXIT_PROCESS_DEBUG_EVENT event in particular) after Delve
calls TerminateProcess. The events need to be consumed by
debugger before debugged process will be released by
Windows. So call Process.waitForDebugEvent after
TerminateProcess in Process.Kill.
Fixes#398
* cmd/dlv: make TestIssue398 pass on darwin
* cmd/dlv: add comment for TestIssue398
* proc/native: wait for debuggee to exit before returning from windows Process.Kill
* proc/native: close process handle before returning from windows killProcess
* proc/native: remove not used Process.Process
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